The Angel Knight (Celtic Lairds‪)‬

When English troops threaten Lady Christiane MacGillean's beloved castle, she has no choice but to set it ablaze—and with it, the ancient treasure hidden there. Escaping into the Highland hills, she is quickly captured, taken south and caged by the English king. Outraged by the lady's treatment, Sir Gavin Faulkener bargains for her life—and suddenly finds himself not only guardian of her castle, but wedded to her as well.

As they rebuild the ruined tower together, Christiane begins to trust the knight, who cannot deny his deepening passion for her—but he is honor-bound to the king, and the lady remains very much a rebel . . .

Contains mature themes.